Korean Job Discussion Forums

[Sapa]

I only just found out that I have Friday off and don't have to be back in work till Wednesday. I only have a couple of days to organise getting out of Seoul. Am I a bit late to organise going to Jeju-do with regards to being able to find a hotel and stuff.
If it should be ok, can you recommend any hotels, locations or anything else you can think of doing there.

Also if Jeju isn't a good idea this late in the day, where else in Korea is nice to get away for a few days and see some countryside?